A look at when to use the prepositions "for" and "since" to indicate how long something has been happening.  An easy-to-remember rule is presented, then the viewer is given practice exercises.

The English Toolbox

For vs. Since

This tense indicates frequent, regular, or habitual actions in the present.
Rule
Remove "na" from the root verb and add "ta", "te" or "ti" as per the number and gender of the subject.
Verb - khana
Ram khaTA hai राम खाता है - masculine singular
Sita khaTI hai - सीता खाती है - feminine singular
Hum khaTE hein - हम खाते हैं - masculine plural
Sita and Mina eat - सीता और मीना खाती हैं - feminine plural